There are three other snakes that are nearly endemic to the ecoregion, namely floodplain water snake (Lycodonomorphus obscuriventris), dwarf wolf snake (Lycophidion nanus) and eyebrow viper (Proatheris superciliaris).

And I can't speak for every citizen in the city of Cedar Rapids, which is a city of 120,000 people, but anecdotally, yes, many of the people that we talked to said because they were told they live in a 500-year floodplain, meaning something like this only happens every 500 years, that they did not need flood insurance, and so they didn't buy it.